Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

21156987 (number)

21156987 is an odd 8-digits composite number following 21156986 and preceding 21156988. In scientific notation, it is written as 2.1156987 × 10^7. The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors. There are 13260192 positive integers (up to 21156987) that are relatively prime to 21156987.

Interesting facts

21156987 has 8 divisors, whose sum is 21831600
The reverse of 21156987 is 78965112
Previous prime number is 59

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3

Name

Name	twenty-one million one hundred fifty-six thousand nine hundred eighty-seven

Notation

Scientific notation	2.1156987 × 10^7
Engineering notation	2.1156987 × 10^6

Prime Factorization of 21156987

Prime Factorization 69 × 59 × 5197

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21156987	Product of the distinct prime numbers

The prime factorization of 21156987 is 69 × 59 × 5197. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 6, 16, 75, 775, 958, 8715, 8059, 70579, 7374, 658412, 139203, 7728028, 4551481, 39912104, 98276292, 459409773, 373075898, 9950554420, 9035138819

Basic calculations (n = 21156987)

Multiplication

n×y

n×2	42313974
n×3	63470961
n×4	84627948
n×5	105784935

Division

n÷y

n÷2	10578493.5
n÷3	7052329
n÷3	5289246.75
n÷5	4231397.4

Exponentiation

n^y

n²	447618098918169
n³	9.4702502997764E+21
n⁴	2.0036196247912E+29
n⁵	4.2390554354651E+36

Nth Root

^y√n

²√n	4599.6724883409
³√n	276.57819609598
⁴√n	67.820885340291
⁵√n	29.180367950671

Divisors of 21156987

1, 59, 69, 4071, 5197, 306623, 358593, 21156987

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21156986	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	1	Returns the nth root of the product of n divisors
H	Harmonic Mean	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21156987 can be divided by 8 positive divisors. The sum of these divisors (counting 21156987) is 1, the average is 0.125.

Base conversion 21156987

Base	System	Value
2	Binary	1010000101101010001111011
3	Ternary	1110210212221010
4	Quaternary	1100231101323
5	Quinary	20404010422
6	Senary	2033245003
8	Octal	120552173
10	Decimal	21156987
12	Duodecimal	7103763
16	Hexadecimal	142d47b
20	Vigesimal	6c4c97
36	Base36	clgu3

Cryptographic Hash Functions

md5	ed58d89139e310df5a727053695df4fa
sha1	393e6283fc4e45190a4689840f45f9f0a238d70d
sha256	b1d92423a49b843a5fa5b43f6468ae3aa481e9e54c5be620eadd099f9ddd8ed3
sha512	c9537abfaccb2dd87e1732ffaaa295dddecc8d250335896596b857b94e901739b633ad65ba13c4fa0c29b6954b933781479bd608789beaa1167b52acac425e64
ripemd-160	917e750e58d8abc3f6ebcd725c608e9273d2d87f

21156987 as geometric shapes

Circle

Radius = n

Diameter	42313974
Circumference	132933269.86259
Area	1.4062337311751E+15

Sphere

Radius = n

Volume	3.9668891692579E+22
Surface area	5.6249349247006E+15
Circumference	132933269.86259

Square

Length = n

Perimeter	84627948
Area	447618098918169
Diagonal	29920497.954351

Cube

Length = n

Surface area	2685708593509014
Volume	9.4702502997764E+21
Space diagonal	36644976.419074

Equilateral Triangle

Length = n

Perimeter	63470961
Area	1.9382432242842E+14
Altitude	18322488.209537

Triangular Pyramid

Length = n

Surface area	1.9382432242842E+14
Volume	1.1160797010843E+21
Height	9973499.3181171